We all know that, diamond is the hardest materials around the world,and main chemical content of diamond is carbon with high density. diamond created from carbon with other materials, that is why diamond with impurity inside or outside. purity and color grade are the main principles for sorting diamond.

Purity standard of diamond: VVS, VS, SI,etc,

Color grade of diamond: D, E, F, G, H, I , J, G, etc.

When we understand the diamond growth principle,then we should know the different levels of diamond from impuriy and color grade. Nomatter natural diamond or Lab Grown Diamond, they are all have impurity and lower color grade. but the purity and color grade of natural diamond uncontrollable, quality of them depends on the growth environment at that time.

the quality of Lab Grown Diamond are controllable,we can get the clean lab created diamond from laboratory.Engineer control the formula and the growth temperature, pressure, finally get the exactly grit size we need, the quality we are looking for.

the technology still need time to a make breakthrough for bigger size, like 2carat per pcs, 3carat per pcs, 5carat per pcs, 10carat per pcs, etc.

Where to buy Lab Grown Diamond?

There are two types of Lab Grown Diamond: One called CVD Diamond; another called HTHP Diamond, they are all belong to Synthetic Diamond.

HTHP=high temperature high pressure.

CVD=chemical vapor deposition.

The production method is differently, and the quipments differerntly too.

In the market of Synthetic Diamond for jewellery, mainly are HTHP Diamond.

Right Now, there are three big factories in China who produce the HTHP Lab Grown Diamond.

All of the three factories in Henan Province, and office in Zhengzhou city. Captial of Henan province.

(1).Huanghe, production range mainly are small size, from 1mm to 2mm, 2-2.5mm, 2.5-3mm.